The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-318-9689, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Amz Alabama Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Amz Alabama Inc. (CAGE 076M6); Bae Systems Hagglunds Aktiebolag (CAGE AC90N) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-318-9689 |
| Primary Part Number | 2523 2121-099 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Amz Alabama Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2523 2121-099 | Amz Alabama Inc. (USA) |
| 25232121-099 | Bae Systems Hagglunds Aktiebolag (SWE) |
| Reference | Meaning |
|---|---|
| 91033-991 | 3/9 Design control — primary reference U.s. Defense Services, Inc. Dba Usds |
| 10400597 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 25232121-099 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
NSN 4730-01-318-9689 is a Elbow,tube to Boss, manufactured by Amz Alabama Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-318-9689 has 2 manufacturer part numbers on file: 2523 2121-099 (Amz Alabama Inc.), 25232121-099 (Bae Systems Hagglunds Aktiebolag).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-326-5928. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.